San Antonio Calibration and Metrology Lab

Our San Antonio Metrology Laboratory was established in 1976 to service commercial industries and the U.S. Government throughout the U.S.A., principally South Texas, including Houston, Austin, San Antonio, Corpus Christi, and surrounding areas. Our customer base is in constant growth, ranging from large multi-million dollar electronic assembly plants to small proprietorships. We specialize in the precision calibration and repair of a wide variety of electronic, physical, and dimensional test equipment, the critical tools that measure AC/DC Voltage, Resistance, Capacitance, Frequency, Temperature, and Humidity. Our San Antonio facility utilizes both state-of-the-art electronic equipment and computer automated procedures to help ensure accurate, repeatable, and timely calibration of your vital equipment. We understand that your research, engineering, manufacturing, and inspection services are only as sound as your company’s test equipment, and there is little margin for error in the calibration business. Our mission is perfection through technical excellence; The key to attaining this goal is our quality assurance program, combined with our policy of continuous customer interface and active solicitation of feedback, This is the root of our customer satisfaction and loyalty.  Rothe Development, Inc.: Service and Support, Made to Measure. Our laboratory is accredited to ISO 17025 and registered to ISO 9001. All calibration measurements performed by our laboratory are traceable to the National Institute of Standards and Technology (NIST).

Certifications and Memberships

  • Accredited to ISO/IEC 17025:2005. View Certificate
  • Accredited to ANSI/NCSL Z540-1-1994.
  • Accredited by the ANSI/ASQ National Accreditation Board/ACLASS.
  • ISO 9001:2015 registered by Underwriters Laboratories, Inc. View Certificate

ASQ Certified Calibration Technicians

Since 1976 the Rothe corporate office has maintained an in-house calibration facility to support various government and commercial contracts. This facility specializes in precision calibration and repair of a wide variety of test equipment including:

  • DC and Low Frequency Systems
  • Pneumatic Systems
  • Mechanical Systems
  • Temperature Systems
  • Hydraulic Systems

24/7 On-line access to equipment certifications.

  • All calibrations traceable to the National Institute of Standards and Technology (NIST).
  • Superior service with calibration programs tailored to meet your needs.
  • Certified for on-site Calibration.
  • Pick-up and delivery available.
  • Complete asset tracking and recall.
  • Constant 68-degree room for high-accuracy dimensional needs.

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Electronic

  • Amplifiers
  • Ammeters
  • Analyzers
  • Attenuators
  • Bridges
  • Calibrators - Meter
  • Capacitance Measuring Systems
  • Capacitance Standards
  • Chart Recorders
  • Comparators
  • Communication Test Sets
  • Converters
  • Counters
  • Couplers
  • Curve Tracers
  • Current Standards
  • Decades
  • Distortion Analyzers
  • Dividers
  • Frequency Meters
  • Frequency Synthesizers
  • Frequency Standards
  • Function Generators
  • Impedance Meters
  • Inductance Meters
  • Megohmmeters
  • Multimeters
  • Noise Level Meters
  • Oscillators
  • Oscillographs - Viscorders
  • Oscilloscopes
  • Phase Meters
  • Power Meters
  • Power Supplies
  • Preamplifiers
  • Probes
  • Pulse Generators
  • Resistance Bridges
  • Resistance Standards
  • Signal Generators
  • Sound Pressure Level Meters
  • Spectrum Analyzers
  • Sweep Oscillators
  • Temperature/Humidity Meters/Sensors
  • Temperature Chambers
  • Thermocouple Simulators
  • Transistor Testers
  • Transmission Test Sets
  • Voltage Standards
  • Voltmeters

Physical

  • Gage Blocks
  • Pin Gages
  • Plug Gages
  • Length Standards
  • Calipers
  • Outside Micrometers
  • Inside Micrometer
  • Depth Micrometer
  • Height Gages
  • Dial Indicators
  • Plain Ring
  • Plain Plugs
  • Thread Rings
  • Thread Plugs
  • Torque Wrenches
  • Torque Transducers
  • Scales
  • Force Gauges
  • Pressure Gauges
  • Vacuum Gauges

Measurement tolerances

Dimensional measurements also made on Pratt & Whitney Lab Master Universal referenced to Grade 1 Gage Blocks. All measurements to 68°F ±1°.
Test/Measurement Range Margin of Error
DC VOLTAGE - SOURCE 0 to 20 KV ±0.5 ppm
DC VOLTAGE - MEASURE 0 to 20 KV ±3.3 ppm
DC VOLTAGE - TRANSFER 0 to 100 V <1 ppm
AC VOLTAGE - SOURCE .22 mV to 10 KV ±45 ppm
  10 Hz to 1 MHz  
AC VOLTAGE - MEASURE mV to 20 KV ±29 ppm
  10 Hz to 1 MHz  
DC CURRENT - SOURCE pA to 100 A  ±34 ppm
DC CURRENT - MEASURE pA to 500 A ±24.5 ppm
AC CURRENT - SOURCE uA to 100 A  ±135 ppm
  10 Hz to 10 KHz  
AC CURRENT - MEASURE uA to 100 A ±160 ppm
  10 Hz to 100 KHz  
RESISTANCE - SOURCE u  to 1T  ±4 ppm
RESISTANCE - MEASURE u  to 10 T  ±6.2 ppm
CAPACITANCE pfd to fd ±0.02%
INDUCTANCE uH to H ±0.02%
FREQUENCY ACCURACY PHASE LOCKED TO WWVB  
FREQUENCY - SOURCE uHz to 4.2 GHz  
FREQUENCY - MEASURE uHz to 12.4 GHz  
RF POWER - MEASURE -70 dBm to +20 dBm ±1.5%
  100 KHz to 18 GHz - 50   
     
  -30 dBm to +20 dBm ±1.5%
  100 KHz to 2 GHz - 75   
     
  -127 dBm to +30 dBm ±0.005dB/
  2.5 MHz to 1300 MHz 10 dB step
MODULATION "AM FM, PM & SSB",±1 dB
DISTORTION 10 Hz to 110 KHz ±1 dB
SPECTRUM/FFT ANALYSIS 476 uHz to 8 GHz  
SOUND LEVEL - SOURCE  74 dB to 114 dB ±0.25dB
  125 Hz to 4 KHz  
SOUND LEVEL - MEASURE MEETS ANSI - TYPE 1  
TEMPERATURE - MEASURE -200°C to +500°C ±0.01°C
TEMPERATURE - SOURCE  -30°C to +650°C ±0.01°C
THERMOCOUPLES ALL ITS-68 OR ITS-90
PRESSURE -30 inHg to 1000 psi AIR ±0.01%
  "5 psi to 15 000 psi",DEADWEIGHT ±0.1%
HUMIDITY – SOURCE 11% TO 95% ±0.5%
HUMIDITY – MEASURE 0% TO 100% ±0.5%
DIMENSIONAL 0 to 40” GRADE 1 Gage Blocks or XXX Master Rings
 

Business Unit

Address

Rothe Development, Inc.
4614 Sinclair Road
San Antonio, TX 78222

Phone

Toll-Free: 800-229-5209
Office: 210-648-3131 Ext. 23
Fax: 210-648-4091

Personal Contacts

Calibration Lab Manager

Pete Stemmermann

Rothe Development, Inc.
4614 Sinclair Road
San Antonio, TX 78222

Email: pete@rothe.com

Toll-Free: 800-229-5209
Office: 210-648-3131, Ext. 20
Fax: 210-648-4091

Quality Manager

Will Wright

Rothe Development, Inc.
4614 Sinclair Road
San Antonio, TX 78222

Email: Will@rothe.com

Toll-Free: 800-229-5209
Office: 210-648-3131 Ext. 23
Fax: 210-648-4091